# System Requirements
with runtime version including Office Tool Plus and Runtime library, you can run Office Tool Plus without .NET Runtime installation.
# Supported systems
Windows 7 SP1, Windows 8, Windows 10.
Windows Server 2008 R2 SP1, Windows Server 2012 or higher.
Office Tool Plus doesn't support Mac OS.
# For Windows 7
If you can't run Office Tool Plus on Windows 7, please update your system using Windows Update.
For quick solution, please try to download KB2533623 update first: Update for Windows 7 (KB3063858) (opens new window), Update for Windows 7 for x64-based Systems (KB3063858) (opens new window). If not work, update the system completely.
Alternatively, you can download an update pack (opens new window) to upgrade your Windows 7.